strrat | db0307c145bf8f940b790830d5ade8fd7bb6bac5dfc482a0d2eda2097ba24246

Analysis

max time kernel
145s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
20-06-2022 09:20

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General

Target

RFQ- Ref. No. MS-DGP-220137.js
Size

375KB
MD5

522a31506ef88ce5bff4b179b11a9a4e
SHA1

24c6896ce449bd32acc6827247b14f5c51ae9f71
SHA256

db0307c145bf8f940b790830d5ade8fd7bb6bac5dfc482a0d2eda2097ba24246
SHA512

02ca78bd2121f5d94e282af76beee1c292871eb9e22ab90474230de7565b4199682df14295100b7144c2cbd3940a2a5e23ce066e7dbd3b34dba65378af8843ce

Score

10^/10

strrat vjw0rm persistence stealer trojan worm

Malware Config

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat
Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 14 IoCs

Processes:

wscript.exe

flow	pid	process
4	5000	wscript.exe
7	5000	wscript.exe
23	5000	wscript.exe
40	5000	wscript.exe
42	5000	wscript.exe
48	5000	wscript.exe
49	5000	wscript.exe
52	5000	wscript.exe
53	5000	wscript.exe
56	5000	wscript.exe
57	5000	wscript.exe
58	5000	wscript.exe
59	5000	wscript.exe
60	5000	wscript.exe

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 3 IoCs

Processes:

wscript.exejava.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JUclMnXWGX.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SM.jar	java.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\JUclMnXWGX.js	wscript.exe

Loads dropped DLL 1 IoCs

Processes:

java.exe

pid process

1812 java.exe

pid	process
1812	java.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exejava.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\JUclMnXWGX.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SM = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\SM.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SM = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\SM.jar\""	java.exe

Drops file in Program Files directory 12 IoCs

Processes:

java.exe

description	ioc	process
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\ntdll.pdb	java.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

2788 schtasks.exe

pid	process
2788	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

wscript.exejava.exejava.execmd.exe

description	pid	process	target process
PID 4212 wrote to memory of 5000	4212	wscript.exe	wscript.exe
PID 4212 wrote to memory of 5000	4212	wscript.exe	wscript.exe
PID 4212 wrote to memory of 900	4212	wscript.exe	java.exe
PID 4212 wrote to memory of 900	4212	wscript.exe	java.exe
PID 900 wrote to memory of 4428	900	java.exe	java.exe
PID 900 wrote to memory of 4428	900	java.exe	java.exe
PID 4428 wrote to memory of 4948	4428	java.exe	cmd.exe
PID 4428 wrote to memory of 4948	4428	java.exe	cmd.exe
PID 4428 wrote to memory of 1812	4428	java.exe	java.exe
PID 4428 wrote to memory of 1812	4428	java.exe	java.exe
PID 4948 wrote to memory of 2788	4948	cmd.exe	schtasks.exe
PID 4948 wrote to memory of 2788	4948	cmd.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\RFQ- Ref. No. MS-DGP-220137.js"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4212

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\JUclMnXWGX.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:5000

C:\Program Files\Java\jre1.8.0_66\bin\java.exe
"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Local\Temp\SM.jar"
2⤵
- Suspicious use of WriteProcessMemory
PID:900

C:\Program Files\Java\jre1.8.0_66\bin\java.exe
"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\SM.jar"
3⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4428

C:\Program Files\Java\jre1.8.0_66\bin\java.exe
"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\SM.jar"
4⤵
- Loads dropped DLL
- Drops file in Program Files directory
PID:1812

C:\Windows\SYSTEM32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\SM.jar"
4⤵
- Suspicious use of WriteProcessMemory
PID:4948

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\SM.jar"
1⤵
- Creates scheduled task(s)
PID:2788

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
Filesize
50B

MD5
0beb4ac76940729848fda2d743957197

SHA1
2324361e91432b21f014150732f33bb7da608f1d

SHA256
e96138484bf364a205f75346c561d67ccf1c94f7bbd0cde3d8be2421f023745e

SHA512
8a8992469c430272c405e668ae8638bdd4d22225284b63d00b7d2f1edf9e360bef6ac8f04e447f273c9d5147a62d25ec06155c8ee33b6e996764cb7e232cb4da

Download Submit
C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
Filesize
50B

MD5
478cc5a6dba9d42b707853312cae05ca

SHA1
959083d14e6f2534c19a053a44b6ca4dd2d1b9ee

SHA256
416162373154149618d63ec8871a5a99d844fb5a43da3c9db5930bfe28c534c1

SHA512
5a267587fb23a41e0e17df2d9a86f59cedd8403078e172138365e00902f49a58e60e0f69647235dd27baab29a70b016622480d8c68b421259100b49d03924cf4

Download Submit
C:\Users\Admin\AppData\Local\Temp\SM.jar
Filesize
164KB

MD5
edf0e95033cb0df96be06c5088142288

SHA1
3972af92633203e7857ec0e4ae65246b32c83539

SHA256
9712cb8921bc1aaf24f86d6a82ce59a332f6ad04eb1af0414f9bd51e0f35e049

SHA512
b7086f0880328bfbb11f6a48a95bde9718318bec9a66c4d00dc16384a1c7ccae97685c7e50d8278c3a267431032d418c61acc9a9ca926d0bd948b79c722a562a

Download Submit
C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna8663276600998243784.dll
Filesize
241KB

MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
C:\Users\Admin\AppData\Roaming\JUclMnXWGX.js
Filesize
30KB

MD5
1a78c6c4ea92442d7da8af8d2557e0d2

SHA1
410764bee9220b5630ac46f7a1c5c36c93b742c9

SHA256
288f91b613ec105cf8d9576e056b6c504c859c842b3b17649d103308040bd82d

SHA512
548c4cd49e8277b49d25d2d4b3ba04a29ba474e0ae1761a8edf12643923a6872e8bc448c05b0003c7bcea44cf1847d82ea7ad89874b6657e41055b89e7d4b20d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2632097139-1792035885-811742494-1000\83aa4cc77f591dfc2374580bbd95f6ba_2c37a701-1043-4f89-b4d1-d05ed25c6971
Filesize
45B

MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

Download Submit
C:\Users\Admin\AppData\Roaming\SM.jar
Filesize
164KB

MD5
edf0e95033cb0df96be06c5088142288

SHA1
3972af92633203e7857ec0e4ae65246b32c83539

SHA256
9712cb8921bc1aaf24f86d6a82ce59a332f6ad04eb1af0414f9bd51e0f35e049

SHA512
b7086f0880328bfbb11f6a48a95bde9718318bec9a66c4d00dc16384a1c7ccae97685c7e50d8278c3a267431032d418c61acc9a9ca926d0bd948b79c722a562a

Download Submit
C:\Users\Admin\AppData\Roaming\lib\jna-5.5.0.jar
Filesize
1.4MB

MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

Download Submit
C:\Users\Admin\AppData\Roaming\lib\jna-platform-5.5.0.jar
Filesize
2.6MB

MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

Download Submit
C:\Users\Admin\AppData\Roaming\lib\sqlite-jdbc-3.14.2.1.jar
Filesize
4.1MB

MD5
b33387e15ab150a7bf560abdc73c3bec

SHA1
66b8075784131f578ef893fd7674273f709b9a4c

SHA256
2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

SHA512
25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

Download Submit
C:\Users\Admin\AppData\Roaming\lib\system-hook-3.5.jar
Filesize
772KB

MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
C:\Users\Admin\SM.jar
Filesize
164KB

MD5
edf0e95033cb0df96be06c5088142288

SHA1
3972af92633203e7857ec0e4ae65246b32c83539

SHA256
9712cb8921bc1aaf24f86d6a82ce59a332f6ad04eb1af0414f9bd51e0f35e049

SHA512
b7086f0880328bfbb11f6a48a95bde9718318bec9a66c4d00dc16384a1c7ccae97685c7e50d8278c3a267431032d418c61acc9a9ca926d0bd948b79c722a562a

Download Submit
C:\Users\Admin\lib\jna-5.5.0.jar
Filesize
1.4MB

MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

Download Submit
C:\Users\Admin\lib\jna-platform-5.5.0.jar
Filesize
2.6MB

MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

Download Submit
C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar
Filesize
4.1MB

MD5
b33387e15ab150a7bf560abdc73c3bec

SHA1
66b8075784131f578ef893fd7674273f709b9a4c

SHA256
2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

SHA512
25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

Download Submit
C:\Users\Admin\lib\system-hook-3.5.jar
Filesize
772KB

MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
memory/900-168-0x0000000002CB0000-0x0000000003CB0000-memory.dmp

Filesize
16.0MB

Download
memory/900-142-0x0000000002CB0000-0x0000000003CB0000-memory.dmp

Filesize
16.0MB

Download
memory/900-227-0x0000000002CB0000-0x0000000003CB0000-memory.dmp

Filesize
16.0MB

Download
memory/900-175-0x0000000002CB0000-0x0000000003CB0000-memory.dmp

Filesize
16.0MB

Download
memory/900-181-0x0000000002CB0000-0x0000000003CB0000-memory.dmp

Filesize
16.0MB

Download
memory/900-132-0x0000000000000000-mapping.dmp

Download
memory/900-176-0x0000000002CB0000-0x0000000003CB0000-memory.dmp

Filesize
16.0MB

Download
memory/900-149-0x0000000002CB0000-0x0000000003CB0000-memory.dmp

Filesize
16.0MB

Download
memory/900-157-0x0000000002CB0000-0x0000000003CB0000-memory.dmp

Filesize
16.0MB

Download
memory/900-177-0x0000000002CB0000-0x0000000003CB0000-memory.dmp

Filesize
16.0MB

Download
memory/900-173-0x0000000002CB0000-0x0000000003CB0000-memory.dmp

Filesize
16.0MB

Download
memory/900-172-0x0000000002CB0000-0x0000000003CB0000-memory.dmp

Filesize
16.0MB

Download
memory/1812-213-0x0000000002B30000-0x0000000003B30000-memory.dmp

Filesize
16.0MB

Download
memory/1812-197-0x0000000000000000-mapping.dmp

Download
memory/1812-225-0x0000000002B30000-0x0000000003B30000-memory.dmp

Filesize
16.0MB

Download
memory/1812-226-0x0000000002B30000-0x0000000003B30000-memory.dmp

Filesize
16.0MB

Download
memory/2788-199-0x0000000000000000-mapping.dmp

Download
memory/4428-174-0x0000000000000000-mapping.dmp

Download
memory/4428-194-0x00000000024A0000-0x00000000034A0000-memory.dmp

Filesize
16.0MB

Download
memory/4948-196-0x0000000000000000-mapping.dmp

Download
memory/5000-130-0x0000000000000000-mapping.dmp

Download